August weather forecast and climate
Tokyo, Japan

A stunning view of the cityscape of Tokyo, Japan, taken at dusk
A stunning view of the cityscape of Tokyo, Japan, taken at dusk
August is the peak of summer and characterized by the highest temperatures of the year. The lowest average reads 23°C (73.4°F) and the highest 29°C (84.2°F), making it the hottest and most oppressive month as the temperatures may go up to 35°C (95°F).
Swimming is pleasurable in August as the ocean is at its warmest, with high temperatures of 26°C (78.8°F) and six hours of daily sunshine. This month records the highest number of crowds on the beaches as well as fully booked accommodations in Tokyo.
Expect afternoon interruptions from the rain for up to seventeen days in August. The rains may be substantial and torrential hence better to keep safe. The rain gauge collects an average precipitation of 147.3mm (5.8").

What is the warmest month in Tokyo?

August is the warmest month in Tokyo, with an average high-temperature of 30.8°C (87.4°F) and an average low-temperature of 23°C (73.4°F).

What is the temperature in August in Tokyo?

In August, in Tokyo, Japan, the average high-temperature is 30.8°C (87.4°F), and the average low-temperature is 23°C (73.4°F).

What is the average humidity in August in Tokyo?

The average relative humidity in August in Tokyo, Japan, is 73%.

How many days does it rain in August in Tokyo?

In Tokyo, Japan, during August, the rain falls for 11 days and regularly aggregates up to 112.6mm (4.4") of precipitation.

When is the sea warmest in Tokyo?

With an average sea temperature of 25.7°C (78.3°F), August is the month with the warmest seawater. For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How warm is the water in August in Tokyo?

In August, the average sea temperature in Tokyo, Japan, is 25.7°C (78.3°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the month with the highest UV index in Tokyo?

Months with the highest UV index are June through August, with an average UV index of 10.

What is the average UV index in August in Tokyo?

In August, the average UV index is 10.
Average temperature in August - Tokyo, Japan
  • Average high temperature in August: 30.8°C

The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (9.6°C).

  • Average low temperature in August: 23°C

The month with the highest average low temperature is August (23°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).

Average humidity in August - Tokyo, Japan
  • Average humidity in August: 73%

The month with the highest relative humidity is July (77%).
The month with the lowest relative humidity is January (52%).

Average rainfall in August - Tokyo, Japan
  • Average rainfall in August: 112.6mm

The wettest month (with the highest rainfall) is May (145.4mm).
The driest month (with the lowest rainfall) is February (58.2mm).

Average rainfall days in August - Tokyo, Japan
  • Average rainfall days in August: 11 days

The month with the highest number of rainy days is October (13 days).
The month with the lowest number of rainy days is July (8.4 days).

Average snowfall in August - Tokyo, Japan
  • Average snowfall in August: 0mm

Months with the highest snowfall are January and February (50mm).
Months with the lowest snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in August - Tokyo, Japan
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.7 days).
Months with the lowest number of snowfall days are May, June, July, August, September, October and November (0 days).

Average sea temperature in August - Tokyo, Japan
  • Average sea temperature in August: 25.7°C

The best month for swimming (with the highest average sea temperature) is August (25.7°C).
The coldest month (with the lowest average sea temperature) is February (14°C).

Average daylight in August / Average sunshine in August - Tokyo, Japan
  • Average daylight in August: 13.5h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in August: 5.5h

The month with most sunshine is January (Average sunshine: 6h).
The month with least sunshine is September (Average sunshine: 4h).

Average UV index in August - Tokyo, Japan
  • Average UV index in August: 10

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 2).

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